clk: meson: remove ee input bypass clocks

During probe, bypass clocks (i.e. ee-in-xtal) are made from device-tree
inputs to provide input clocks which can be access through global name.
The cons of this method are the duplicated clocks, means more string
comparison.

Specify parent directly with device-tree clock name.

Remove the bypass clock registration from the ee probe function.

Signed-off-by: Alexandre Mergnat <[e-mail]>
Signed-off-by: Jerome Brunet <[e-mail]>

drivers/clk/meson/Kconfig

···
 config COMMON_CLK_MESON_EE_CLKC
 	tristate
 	select COMMON_CLK_MESON_REGMAP
-	select COMMON_CLK_MESON_INPUT
 
 config COMMON_CLK_MESON8B
 	bool

drivers/clk/meson/meson-eeclk.c

···
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
 
-#include "clk-input.h"
 #include "clk-regmap.h"
 #include "meson-eeclk.h"
 
···
 {
 	const struct meson_eeclkc_data *data;
 	struct device *dev = &pdev->dev;
-	struct clk_hw *input;
 	struct regmap *map;
 	int ret, i;
 
···
 
 	if (data->init_count)
 		regmap_multi_reg_write(map, data->init_regs, data->init_count);
-
-	input = meson_clk_hw_register_input(dev, "xtal", IN_PREFIX "xtal", 0);
-	if (IS_ERR(input)) {
-		ret = PTR_ERR(input);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "failed to get input clock");
-		return ret;
-	}
 
 	/* Populate regmap for the regmap backed clocks */
 	for (i = 0; i < data->regmap_clk_num; i++)

drivers/clk/meson/meson-eeclk.h

···
 #include <linux/clk-provider.h>
 #include "clk-regmap.h"
 
-#define IN_PREFIX "ee-in-"
-
 struct platform_device;
 
 struct meson_eeclkc_data {